Biology Osmosis Lab Write Up

Biology Osmosis Lab Write Up - Drew Rasmussen Penny Biology...

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Drew Rasmussen Penny Biology 191 Lab September 14, 2010 Lab 3: Osmosis and Diffusion – Write Up 1. Brownian motion is the visible movement of particles caused by unseen molecules moving. 2. The lighter liquids (i.e. fluids with lighter molecular weights) tended to disperse much quicker. This was especially seen when the chemicals were placed on the agar. This is due to heavier molecules being harder to move as it takes a greater force to get them to move at a slower speed, this same force would make a lighter particle move much faster and further. 3. a. Diffusion is the flow of molecules from high concentration to low concentration. b. Hypoosmotic refers to the concentration of solute in relation to the solution and means lower concentration. c. Hyperosmotic refers to the concentration of solute in relation to the solution and means higher concentration d. Isosmotic refers to the concentration of solute in relation to the solution and means equal concentration i.e. no net flow 4. See Graphs Attached**
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5. In the dialysis bag experiment bags A, B, D, E and F showed signs of diffusion because
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This note was uploaded on 01/18/2012 for the course BIOL 191L taught by Professor Dr.dottydouglass during the Fall '10 term at Boise State.

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Biology Osmosis Lab Write Up - Drew Rasmussen Penny Biology...

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